Central bankers from around the world are telling their American counterparts that they are ready for a U.S. interest rate hike and would prefer that the Federal Reserve make the move without further ado.

In private and in public at last week’s global central banking conference in Jackson Hole, the message from visiting policymakers was that the Fed has telegraphed an initial monetary tightening and, following a year-long rise in the dollar, financial markets globally are as ready as they can be.

The powerful group gathered at the end of a roller-coaster week in markets in which the Dow tanked by 1,000 points on Monday on concerns of a slowdown in…